He-Man and the Masters of the Universe Season 1 Episode 59
Strange living plants are gradually taking over Eternia. He-Man accuses Skeletor, and Skeletor accuses He-Man, but the real culprit is a curious plant-man called Evilseed, who intends to take over the whole planet with his plants. He-Man and Skeletor must reluctantly combine their powers in order to wither Evilseed’s plot…
Episode Title: Evilseed
Air Date: 1983-11-24